Polishing-machine.



E. E. BARNES.

POLISHING MACHINE.

APPLICATION FILED 1111.5, 1911.

1,016, 1 98. Patented Jan. 30, 1912.

4 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH co.. WASHINGTON. 1). 1

E. I BARNES.

POLISHING MACHINE. APPLICATION FILED JAN.5, 1911.

1,01 6, 1 98. Patented Jan. 30, 1912.

"1 SHEETS -SHBET 3.

E. E. BARNES.-

POLISHING MACHINE.

Y APPLICATION FILED 1,111.5, 1911.

1,01 6, 1 98. Patented Jan. 30, 1912.

4 SHEETS-SHEET 4. 5 5'? 6/ i 1/ ERI E. BARNES, OF PARKEBS, NEW YORK.

POLISHING-MACHINE.

Specification of Letters Patent.

Patented Jan. 30, 1912.

Application filed January 5, 1911. Serial No. 600,887.

To aZZ whom it may concern:

Be it known that I, ERI E. BARNES, a citizen of the United States, residing at Parkers, in the county of Lewis, State of New York, have invented certain new and useful Improvements in Polishing-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in. the art to which it appertains to make and use the same.

This invention relates to polishing machines and has special reference to a machine designed for polishing round rods such as are used for the handles of brooms, forks, hoes and the like as well as any other cylindrical or slightly tapered turnings such as chair rounds, dowels and the like.

The principal object of the invention is to improve the general construction of polishing machines so that they are made substantially alternate in their operation on articles of the above and like description.

A second object of the invention is to provide an improved feeding mechanism for such machines.

A third object of the invention is to provide a polishing head which will automatically adjust itself to various diameters of rods and will be of improved construction.

lVith the above and other objects in view the invention consists in general of a polishing machine of the class described provided with an improved feed mechanism and with an improved polishing head.

The invention further consists in certain novel details of construction and combinations of parts hereinafter fully described,

illustrated in the accompanying drawings,

and specifically set forth in the claims.

In the accompanying drawings, like characters of reference indicate like parts in the several views, and Figure 1 is a plan view of the machine. Fig. 2 is an elevation of the left hand side of the machine, Fig. 3 is an elevation of the right hand side of the machine, Fig. 4: is a front elevation, Fig. 5 is a detail view on a somewhat enlarged scale showing the polishing head from the front, Fig. 6 is a view showing the means for adjusting the single feed rollers at the front of the machine, Fig. 7 is a view showing the means for adjusting the double feed rollers at the rear of the machine.

The bed or stand for this invention comprises a bed plate 10 which is preferably mountedupon legs 11. The driving gear for the machine is located at the rear and on this part of the machine there is provided a bracket 12 wherein is journaled a stub shaft 13 upon which is fixed a cord pulley 14 for the reception of a suitable belt. Upon the shaft 13 there is also provided a pinion 15 which constitutes a driving pinion for the feed gear. This pinion 15 meshes with a gear 16 which is fixed upon a shaft 17 carried in brackets 18 attached to the bed plate 10. One of these brackets is located at the rear of the machine and the other cllosely adjacent the forward end of the bed p ate.

At the front of the device and extending up from the table at each side is a standard 19 which consists of a pair of spaced legs 20 and centrally disposed of the height of these legs on the right hand side of the machine is secured a, bearing 21 wherethrough passes a shaft 22 having on its inner end a bar 23 provided with a transverse open ended slot 24 adjacent each end of said bar.

On the shaft 22 is also fixed a lever 25 sothat when this lever 25 is turned the bar 23 will also be turned. Slidable between the two legs of the left'hand standard are bearings 26 one of which is located be low and the other above the head bar and these bearings are provided with arms 27 upon each of which is a pin 28 which fits within a respective slot 24. Now by reference to Fig. 6 it will readily be seen that when the lever is moved to the right in this figure the bearings 26 will be drawn toward each other while movement in the opposite direction will permit these bearings to separate.

At the right hand end of the machine adjacent the rear end is adouble standard 30 opposite which on the left hand is a double standard 31. This double standard 31 is provided with a centrally disposed bearing 32 wherein is journaled a stub shaft 33 carrying a bar 34. The double standard is provided with spaced pairs of arms 35 and between the arms of each pair are bearings 36 which are connected by cross bars 37 in such manner that the two bearings above the center of the standard will be connected and the two bearings below will be in like manner connected. From one end of the bar 34 to the center of the upper cross bar 37 extends a link 38 while the remaining cross bar and the end of the bar 34 are connected rearwardly and furthermore by a similar link 39. Fixed upon the stub shaft 33 is a lever 10. Now from an inspection of Fig. 7 it will be obvious that motion of the lower end of the lever 40 toward the right will have the effect of spreading the bearings farther apart while motion in the opposite direction will draw the upper bearings closer to the lower bearings. A spring 42 is connected to one of a series of openings l1 in the lever 40 by a link 43. This spring is also connected to a link 44 which is provided with a series of openings 45 adapted to receive a bolt which also passes through one'of a series of openings 46 in the lever 25.

Extending through the lower bearings 26 in the standards 19 is a shaft 47 upon the right hand end of which is a bevel gear 48 which meshes with a bevel gear 49 fixed upon the shaft 17. Extending through the upper bearings in the standards 19 is a shaft 50 and on the shafts 47 and 50 are gears 51 which are of equal diameters and mesh with each other so as to drive said shafts in opposite directions. On the shafts centrally of the bed plate are also provided concave feeding rollers 52.

In one pair of the lower bearings in the standards 30 and 31 is a shaft 53 while in the other pair is a shaft 5 3 In the upper bearings of the standards 30 and 31 are shafts 55. On the shaft 53 is a bevel gear 56 which meshes with a bevel gear 57 on the shaft 17. The shafts 54 and 55 are provided with gears 58 and the gear 58 of the shaft immediately above 51 meshes with a similar gear on said shaft 54. The bracket 30 is provided with a bearing 59 which carries a stub shaft 60 whereon is mounted a gear 61 forming an idler gear and this idler gear meshes with the upper gears 58. On the shaft 53 is a gear 62 which meshes with the gear 58 of the shaft immediately above the same. The shafts 55 are furthermore provided cent-rally of the bed plate and in alinement with the feed roller 52 with similar concave feed rollers 63.

In the operation of this part of the machine it will be seen that if a handle or the like he introduced between the feed rollers 52 the spring 42 will yield sulliciently to al low the handle to pass between the rollers after which the machine being in motion, the spring will act as a tension means to hold the rollersfirmly on the handle so that the latter will be fed toward the rear of the machine until it is engaged bej' ep the upper and lower feed rollers 6} rill in like manner yield to perm" .ssage and will also aid, througlr ring, in maintaining pressure to 1 1e handle 1 prevent its rotation.

Between the rollers 52 and 53 there is mounted upon the bed plate 10 a pairof alined bearings 64 the axis of which lies centrally between the upper and lower rollers. In these bearings 64 is mounted a hollow spindle and between the bearings there is fixed to this spindle a belt pulley 66. On the end of the spindle 65 which faces the rollers 52 there is a face plate 67 provided with a centrally disposed opening 68 forming a continuation of the hollow in the spindle 65. On either side of this opening are guides 69 and between these guides slides a pair of buffers 70 of either cast iron or steel, preferably the former, which are provided with concaved faces. Pivoted to the face plate 67 are angled levers 71. The 0 shorter arm of each of these levers extends over one end of a respective guide and is connected by means of a link 72 to a respective buffer while the longer arm extends substantially parallel with the guide over which its shorter arm extends and is pro-- vided on its extremity with an enlargement 73 constituting a weight. In the path of each of the longer arms is an adjustable stop 74:. In the operation of this portion of the device when the spindle 65 is set in rotation by a belt over the pulley 66 the effect of the centrifugal force upon the weights 73 will be to overcome the tendency of the buffers to separate from centrifugal force and will force these buffers in upon the handle which has been passed between. the upper and lower rollers and through the opening of the face plate and spindle. By this means the rapid rotation of the buffers on the handle will give it the required degree of polish and the machine is so proportioned that the feed will be slow enough to allow complete action of the buffers on each and every part of the handle. It will be observed that whether the handle be straightor tapering the same will be constantly grasped by the feed rollers due to the action of the spring 41 and the adjustable bearings and that also the buffers will move in under the influence of the weighted levers to act upon the handle at all points.

It is of course obvious that the handle may be waxed, oiled or otherwise treated prior to its passage through the machine or may be left without any treatment whatever.

In use the machine is set in operation and a pile of handles is placed convenient to the operator at the front end of the machine. These handles are taken one after the other and passed through the front feed rollers 52 after which the end is guided to enter between the buffers. The handle may then be released by the operator and the feed rollers 52 will carry it through the hollow spindle and start it between the feed rollers 68 during which time the buffers will operate on that part of the handle which is passing through. As the feed rollers 63 grasp the handle they will assist the feed rollers 52 until 'the entire handle is drawn through the hollow spindle and is polished from one end to the other. When one handle is completely polished the operator places another in position while the first handle is fed from the machine by the rear feed rollers. The polished handles may be delivered on a suitable tray or basket or may be removed one by one as is desired.

There has thus been provided a simple and eflicient device of the kind described and for the purpose specified.

It is obvious that many minor changes may be made in the form and construction of this invention without departing from the material principles thereof. It is not therefore desired to confine the invention to the exact form herein shown and described, but it is wished to include all such as properly come within the scope of the appended claims.

WVhat is claimed is 1. In a polishing machine, apolishing head including a disk provided with a centrally disposed opening, a pair of external guides disposed on opposite sides of said opening, a pair of buffers slidable in said guides, a pair of bent levers pivoted at their angles to said plates, each of said levers having one arm extending across the end of one of the guides and connected to a bufler, the other end of the lever extending along the respective guide, and a weight on the last mentioned end of each lever.

2. In a polishing machine, a polishing head including a disk provided with a centrally disposed opening, a pair of external guides disposed on opposite sides of said opening, a pair of buffers slidable in said guides, angle levers pivoted on said disk above and below said guides, the shorter arm of each lever extending over one end of a respective guide, links respectively connecting the shorter arms of the levers and the respective buffers, the longer arm of each lever extending along a respective guide and terminating in a weighted end, and stops adjustably mounted on the disk for engagement by the long arms of the levers to limit the outward movement thereof.

3. In a feeding mechanism, spaced pairs of shafts, tilting bearings supporting said shafts at a respective end of each shaft, bearings supporting the remaining ends of said shafts, the bearings of each pair being movable to vary the distance between the supported ends of each pair of shafts, levers arranged to vary the relative distance between the bearings of each pair, 'a spring connecting said levers and arranged to urge the levers to draw said bearings together, and feeding rollers on said shafts.

4. In a feeding mechanism, spaced pairs of shafts, tilting bearings supporting said shafts at a respective end of each shaft, bearings supporting the remaining ends of said shafts, the bearings of each pair being movable to vary the distance between the supported ends of each pair of shafts, levers arranged to vary the relative distance between the bearings of each pair, a spring connecting said levers and arranged to urge the levers to draw said bearings together, and feeding rollers on said shafts; in combination with a polishing head located between spaced pairs of feeding rollers.

In testimony whereof, I affix my signature,,in presence of two witnesses.

ERI E. BARNES. Witnesses A. A. CoPELEY, HENRY F. WEBER.

Copies of this patent nay be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

